Packing-ring



H. KlSTNER.

PACKING RING.

APPLICATION FILED MAY 12. 1919.

1,393,542, Patentd 001. 11, 1921.

.ing an angular effect.

UNITED STATE-S rarest OFFECE.

HERMAN RIsTNRR, or ELIZABETH, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGN- MENTS, To VICTORY HAMMERED PISTON RING, COMPANY, on NEWARK, NEW JERSEY, A CORPORATION or NEW JERSEY. e e

PACKING-RIN T 0 all whom it may concern Be it known-that I, HERMAN KisrNnn, a citizen of the United States, residing in the city of Elizabeth, in the "county of Unlon and State of'New Jersey,have invented certain new and usefullmprovements in Packing-Rings,,of which the following is a full, clear, and exact description, such as Wlll enable others skilled. in the art to which it pertains to make and use the same, reference being had to the accompanyingdrawings, and to the numerals of reference marked thereon, forming a part of this specification.

My invention relates to packing rings and more especially to metallic spring packing rings for pistons of steam o-r'internal combastion engines, pumps and the like.

One of the objects of my invention is to provide a packing ring for this purpose, the structure of which is so simplified as .to render the same positive and effective in operation, durable in use, simple and inexpensive in construction, thereby reducing the cost of manufacture to a minimum.

A further. object of my invention is to provide apacking ring, which will maintain at all times, a tight but resilient fit between the piston and the wall of the cylinder without giving undue or frictional resistance against the walls, and one which owing to its construction and manufacture is adapted to more readily and automatically adjust itself as the contact surfaces become worn.

This I accomplish by giving the ring on its peripheral edges, a hammer or a series of hammer blows, which compress the metal toward the center of the ring, thereby produc- This angular effect, to the ordinary eye, would appear to have been the result of a machine operation such as, for instance, eccentrically turning the inner peripheral edges of the ring on a lathe, but the angular effect instead, is produced by delivering the blows preferably, simultaneously, on both edges, thereby crowding the metal toward the center of the ring which produces the maximum degree of tension desired.

. By delivering the blows on the inside edges of the ring the uniformity of the ring is largely maintained, thereby avoiding subsequent operation and reducing the amount of metal to be removed to a minimum, thereby maintaining the maximum degree of tension originally imparted to the ring by the angular blow, which has the effect of homogeneously crowding or uniting. the particles ofmetal together. l iVith these ends in view, my invention consists of certain novelties of construction and arrangements of parts as hereinafter set forth and pointed out in the claim. While the preferred form of my invention is illus trated in the accompanying drawings, yet it is tobe understood that minor changesmay the scope In the drawings, 1 represents a packingring, preferably composed of comparativelv soft, smooth wearing metal, such as cast iroia of proper quality, although any other suitable material may be employed, if desired.

The ends of the ring, preferably, overlap, being cut longitudinally and transversely of the packing ring 1, so as to form a sc'arfed joint, although a square, tapered or other form of juncture may be used. The ring is further provided with beveled surfaces 22 eccentrioally formed, preferably on the inner peripheral edges of the ring, and where the ring is to be secured in the retaining groove of an engine cylinder, these beveled surfaces would be provided on the outer peripheral edges of the ring, in order to impart to the ring the desired tension required. The beveled faces or surfaces, are the results of delivering the blow or blows upon the peripheral edges of the ring, in order to crowd the metal in the direction indicated by the arrows, namely, toward the center of the ring,thereby homogeneously crowding r uniting the particles of metal together, and imparting thereto the maximum degree of tension, as distinguished from delivering the blows upon the inner curved surfaces of the ring, which experience has demonstrated, spreads and in many cases, fractures the metal, which results in a large percentage of breakage during the manufacture. Before specification of Letters Patent. Pztiffinfed 11,1921 4 Application filed May12, 1919. Serial No. 296,324,

the hammering operation takes plaice, the

maximum degree of tension. It is immaterial how the blows of the punch or'hammer are distributed, Whether the operation is done simultaneously'by one blow delivered 'upon each of the peripheral edges, or by a series-of blows-delivered, so long es a continnous compacting along the peripheral edges of the ring is produced.

Y Experience has demonstrated that" the or gztIliZZ-Ll'iOIl above described is {L highlyefli cientfone,"andwhile l' have shown the pre ferred embodiment of my present invention,

I as not ivish to b'e limited we exact details of construction shown and described, as obvious 'modifiezitionsthereof, not involving the exercise of my'invention, maybe made by any skilled mechanic,-2tndsi1ch depzirture from What is herein set forth,1'c0nsider "withinthe scope and terms of my claim.

Having thus described my invention, What I claim es'new and desire to secure-by Letters Patent isci V 'A metal packing ring" consisting of a split ring having the metal atJitsedges compacted to form an eccentrics-11y arranged innerbev eled edge, the bevel of which is greatest, etthe region opposite. the split and decreases inboth directions. e

Thisspecification: signed endia vitnessed this 10th day of January, 1919.1;

' Y v HERMANKlST-NER; 

